Two point charges are located on the x-axis of a coordinate system; q1 = 2 nc is at x = 1 cm, and q2 = -4 nc is at x = 3 cm. what is the total electric force exerted by q1 and q2 on a charge q3 = 5 nc at origin?

Isobars are lines of constant or equal pressure on a weather map. they can be used to find areas of low or high pressure over a broad area, and they can tell us how intense the system may be. on weather maps, you may have noticed areas that have a large l or h over a region with lines circling around them. the l stands for low pressure and h stands for high pressure. the lines circling them are isobars. check out the pressure system and isobars over georgia and florida. what is the present weather in this area ? a) clear and sunny b) cold and cloudy c) changing weather d) lots of precipitation